ref: 3fa44aeba878a812d8b5c7151a1b4da6aa99920b
dir: /examples/pendulum.orca/
......................................... .# PENDULUM #............................ ......................................... ........U.......E......U................. ................J........................ ...............B......................... ................GS....................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................